SEO: W3C Compliance & On-Page Optimizations

World Wide Web Consortium (W3C for Short) is an international standards organization that sets the standards for building and Rendering Web pages, including HTML, CSS, SVG, device APIs, and other technologies for Web Applications.

For a search engine to properly crawl and index your site, it needs to be able to interpret the different elements of your site, such as style, navigation and content. It’s goal is to understand the meaning of the content. Clean, compliant, expected HTML and CSS code make it much easier for the search engines to determine what is content and understand the meaning of the content.

At the same time, you should also keep in mind that 100% compliance could be pretty difficult to achieve. If you run your validation and you end up with some warnings, or maybe just an error or two that isn’t a high priority you will be okay.